Improvement in mechanical movements



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MARCUS A. HARDY, [for cAMenI'DeE, MASSACHUSETTS.'

Lette/rs Patent No. 96,316, dated November 2, 1869.

IMPROVEMENT IN MECHANICAL MOVEMENTS.

The Schedule referred to :in there Letters Patent and making part of the same.

LWN- I, MAneUs A. HARDY, of Cambridge, in the county of Middlesex, and State of Massachusetts, have invented an Improvement in Mechanical Movements,

of which the following description, made with l'refer' ence toI an accompanying drawing, representing the device in end elevation, is an accurate specification'.

This is an invention for converting reciprocating from the shaft, usually slightly greater than the united -semi-diameters ofthe pinion on the shaft and the pinions on the arm, that when one of them is rocked out.

of gear, the other shall be thrown in'.

In the drawing- A is the rotating shaft.

It carries a dy, H, and a pinion, B. n

The fixed frame C furnishes its bearing.' One side of this frame is made with an ear.

AtD is pivoted the rocking-arm E, having aslight motion about pivot D.

At. each end of this arm are placed thegear-wheels F F', meshing togethere and on one of them, as F, is placed the belt-pulley J.

Around this is wrapped cord G, the string of bow K'. When-this cord is moved in the direction of the arrow, wheel F is revolved in that direction also, and, by the partial rotation of arm E, is meshed with pinion B, 'revolving it 'and its shaft A in the opposite di rection.

The motion of 'cord G being reversed, wheel. F is Y drawn away from pinion B, and wheel F thrown, into gear with it; but, as wheel F is nowrevolving in an opposite direction to that of the forward stroke', wheel F revolves as wheel F did formerly, and, consequently, the motion of pinion B is unchanged. Any recip- Qrocating rectilinear motion may be arranged to actuyate this train, and the bow and cord are, therefore, only an illustration. Considering wheel F as the Isource of power, this train may be looked upon as a device for converting reciprocating rotary motion into continuous.

Reciprocating rectilinear motion should be,de1iv'ered as nearly at right angles to armE as'7convenient? The drawing represents friction-gear, and this, for light l work, may be rubber-edged to advantage. Spur-gear may also be employed for heavier work. If used, the y constructor must so` proportion the distance Aof pivot 'D'from shaft A, and so arrange the .lengthy of the -teeth',`that, as wheel-F goes out of gear, F may engage, and viceversa. If the vibration of arm E be allowed to be about twice as great as the length of the gear-teeth, the proportion would hegood. If we make wheels F and F of different sizes',^or the arms of E of different lengths, the motion of pinion B may` be rendered variable, and even intermittent. I claim, as my invention, and desire .to secure by Letters Patentp The arrangement of wheels F Ff, gearing together upon the opposite ends of the rocking-arm E, and each of them alternately meshing with pinion B, substan tially as and for the purpose described.

Witnesses: MARCUS A. HARDY.

THpMAs W. CLARKE, E.- A. CLARKE.. 

